CN108867337B - Waterproof structure of bridge joint and construction method - Google Patents
Waterproof structure of bridge joint and construction method Download PDFInfo
- Publication number
- CN108867337B CN108867337B CN201811048484.1A CN201811048484A CN108867337B CN 108867337 B CN108867337 B CN 108867337B CN 201811048484 A CN201811048484 A CN 201811048484A CN 108867337 B CN108867337 B CN 108867337B
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- Prior art keywords
- bridge joint
- waterproof
- flexible waterproof
- prefabricated
- prefabricated flexible
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000012528 membrane Substances 0.000 claims description 67
- 239000000945 filler Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 30
- 239000000853 adhesive Substances 0.000 claims description 23
- 230000001070 adhesive effect Effects 0.000 claims description 19
- 239000004744 fabric Substances 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 229920002635 polyurethane Polymers 0.000 claims description 12
- 239000004814 polyurethane Substances 0.000 claims description 12
- 238000005187 foaming Methods 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 239000004088 foaming agent Substances 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 229920006327 polystyrene foam Polymers 0.000 claims description 6
- 239000011496 polyurethane foam Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000005484 gravity Effects 0.000 abstract description 3
- 239000003973 paint Substances 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 5
- 230000008093 supporting effect Effects 0.000 description 5
- 239000007767 bonding agent Substances 0.000 description 4
- 229920002396 Polyurea Polymers 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 150000004756 silanes Chemical class 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
Abstract
The invention discloses a waterproof structure of a bridge joint and a construction method, and relates to the field of bridge joint waterproof. The waterproof structure of the bridge joint and the construction method can adapt to large displacement deformation of the bridge joint, can withstand the gravity of water in the bridge joint without being damaged, and greatly prolong the waterproof effect.
Description
Technical Field
The invention relates to the field of bridge joint waterproof, in particular to a waterproof structure of a bridge joint and a construction method.
Background
The existing high-speed railway bridge adopts a box girder structure, and joints at the joints of the existing high-speed railway bridge adopt a water stop belt structure to prevent water, but the water leakage phenomenon is serious. Because operation is required in daytime, maintenance operation cannot be carried out on the high-speed railway bridge in daytime, even if waterproof maintenance is carried out on the bridge panel at the window time of 2-4 hours at night, the effect is not quite obvious, the maintenance durability is very short, and no thoroughly cured waterproof material exists the risk of falling off under the action of the negative drawing force of the train running at high speed, so that potential safety hazards are brought to the high-speed running of the train. In order to achieve long durability after seam maintenance and not to influence the operation and running of a train, and simultaneously ensure the safety of the train, the operation in the box girder below the bridge panel is the best choice, and the maintenance operation can be performed during daytime operation. The common technical measures of the existing joint waterproof structure comprise A and grouting; B. the asphalt coiled material is adhered; C. filling and trowelling joints, and directly adopting waterproof paint or waterproof self-adhesive coiled materials; D. and sealing by sealant. However, these structures only have temporary waterproof function, and under the action of strong vibration, temperature difference and accumulated water above the joint every day, the waterproof material in the joint cannot adapt to displacement deformation to be damaged, or under the action of accumulated water in the joint and strong vibration, the adhesion of the inner wall of the joint is damaged, so that the waterproof failure is caused.
Disclosure of Invention
In order to solve the technical problems, the invention provides the waterproof structure of the bridge joint and the construction method, which can adapt to large displacement deformation of the bridge joint, can resist the gravity of water in the bridge joint without being damaged, and greatly prolong the waterproof effect.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a waterproof structure of a bridge joint, which comprises a water stop belt, light filling blocks, a prefabricated flexible waterproof film and a main waterproof layer, wherein the prefabricated flexible waterproof film is in an inverted U shape, the water stop belt, the light filling blocks and the prefabricated flexible waterproof film are sequentially used for being fixed in the bridge joint from top to bottom, the top of the prefabricated flexible waterproof film is fixedly connected with the light filling blocks, the lower parts of the two sides of the prefabricated flexible waterproof film are fixedly connected with the inner wall of the bridge joint, the light compressible filling body is filled in the prefabricated flexible waterproof film, and the main waterproof layer covers the lower surface of the light compressible filling body and extends to the lower surfaces of beam plates on the two sides of the bridge joint.
Preferably, the lower surface of bridge joint both sides beam slab is provided with the waterproof layer, the waterproof layer set up in the bridge joint both sides beam slab's lower surface with between the main part waterproof layer, the both sides of prefabricated flexible waterproof membrane are fixed with child base cloth, the lower part of the lateral wall of prefabricated flexible waterproof membrane and child base cloth be used for with the inner wall fixed connection of bridge joint, just child base cloth be used for extending to the lower surface of bridge joint both sides beam slab with the waterproof layer overlap joint.
Preferably, the top of the prefabricated flexible waterproof membrane is fixedly connected with the light filling block through an adhesive material, the lower part of the side wall of the prefabricated flexible waterproof membrane is fixedly combined with the inner wall of the bridge joint through a high-strength adhesive or a liquid waterproof coating made of the same material as the prefabricated flexible waterproof membrane, and the tire base cloth is fixedly connected with the inner wall of the bridge joint and the lower surfaces of the beam plates at two sides of the bridge joint through a flexible waterproof coating.
Preferably, the lightweight compressible filler is formed by spray foaming with a polyurethane foaming agent.
Preferably, the lightweight compressible filler is a polyurethane foam filler, a polystyrene foam filler or a polyethylene foam filler, and the lightweight compressible filler is fixed in the prefabricated flexible waterproof membrane by an adhesive material.
Preferably, the lightweight filler is formed by spraying and foaming a polyurethane foaming agent.
Preferably, the light filling block is a polyurethane foam filling block, a polystyrene foam filling block or a polyethylene foam filling block, and the light filling block is fixedly connected with the inner wall of the bridge joint through an adhesive material or a screw.
Preferably, the main body waterproof layer is formed by in-situ coating of a flexible waterproof coating.
Preferably, the main body waterproof layer is a prefabricated self-adhesive waterproof film.
The invention also provides a construction method of the waterproof structure of the bridge joint, which comprises the following steps:
1) The water stop belt is fixedly arranged in the bridge joint;
2) Filling the light filling blocks below the water stop belt according to the size of the bridge joint;
3) Bending the prefabricated flexible waterproof membrane into a U shape on site, enabling an opening of the prefabricated flexible waterproof membrane to be downward, fixedly connecting the top of the prefabricated flexible waterproof membrane with the light filling blocks, fixing two sides of the prefabricated flexible waterproof membrane on the inner wall of the bridge joint, filling the light compressible filling bodies into a U-shaped cavity formed by bending the prefabricated flexible waterproof membrane, and finishing the hollow cavity into a proper shape;
4) And the lower surface of the light compressible filling body and the lower surfaces of the beam plates at two sides of the bridge joint are integrally covered by the main body waterproof layer to form the integral bridge joint flexible cover plate waterproof layer.
Compared with the prior art, the invention has the following technical effects:
1. according to the waterproof structure of the bridge joint and the construction method, the light filling blocks are fixed below the water stop to provide the supporting base layer capable of performing construction operation, the bonding material at the upper part of the prefabricated flexible waterproof membrane and the high-strength bonding agents at the two sides ensure that the prefabricated flexible waterproof membrane is firmly fixed in the bridge joint and does not fall off, the inverted U-shaped prefabricated flexible waterproof membrane is filled with the light compressible filling bodies, the light compressible filling bodies support the prefabricated flexible waterproof membrane and are soft compressible materials, and therefore the flexible U-shaped waterproof structure is formed. The waterproof layer of the main body is adopted to integrally cover the lower surface of the light compressible filling body and the lower surfaces of the beam plates at two sides of the bridge joint, and the waterproof effect is further improved by adding a layer of integral waterproof layer of the main body.
2. According to the waterproof structure and the construction method of the bridge joint, all parts in the bridge joint are made of light materials, and the bonding load of the inner side face of the bridge joint is greatly reduced.
3. The waterproof structure of the bridge joint and the construction method of the invention are constructed on the back surface of the bridge joint, do not influence the operation of the train, can be constructed in daytime, and meanwhile, the high-speed running of the train does not influence the implementation of the waterproof structure of the bridge joint.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a waterproof structure of a bridge seam of the present invention.
Reference numerals illustrate: 1. a water stop; 2. a lightweight filler block; 3. prefabricating a flexible waterproof membrane; 4. a main body waterproof layer; 5. a lightweight compressible filler; 6. a base fabric; 7. a waterproof layer; 8. an adhesive material; 9. and (5) a beam plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a waterproof structure of a bridge joint and a construction method thereof, which can adapt to large displacement deformation of the bridge joint, can withstand the gravity of water in the bridge joint without being destroyed, and greatly prolongs the waterproof effect.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, this embodiment provides a waterproof structure of bridge joint, including waterstop 1, light filler 2, prefabricated flexible waterproof membrane 3 and main part waterproof layer 4, prefabricated flexible waterproof membrane 3 is the U of inversion, waterstop 1, light filler 2 and prefabricated flexible waterproof membrane 3 are fixed in bridge joint from top to bottom in proper order, the top and the light filler 2 fixed connection of prefabricated flexible waterproof membrane 3, the lower part and the inner wall fixed connection of bridge joint of both sides of prefabricated flexible waterproof membrane 3, the intussuseption of prefabricated flexible waterproof membrane 3 is filled with light compressible filler 5, main part waterproof layer 4 covers in the lower surface of light compressible filler 5 and extends to the lower surface of bridge joint both sides beam slab 9.
In order to further strengthen the waterproof effect, the lower surface of bridge joint both sides beam slab 9 is provided with waterproof layer 7, waterproof layer 7 sets up between the lower surface of bridge joint both sides beam slab 9 and main part waterproof layer 4, and the both sides of prefabricated flexible waterproof membrane 3 are fixed with child base cloth 6, and the lower part of the lateral wall of prefabricated flexible waterproof membrane 3 and child base cloth 6 and the inner wall fixed connection of bridge joint, and child base cloth 6 extends to the lower surface and the waterproof layer 7 overlap joint of bridge joint both sides beam slab 9.
The prefabricated flexible waterproof membrane 3 is a high-strength material with a tensile strength of at least 2MPa, preferably a tensile strength of 6-20MPa, and is flexible, preferably with an elongation at break of more than 10%, preferably more than 50%, and capable of being folded at will. In this embodiment, the prefabricated flexible waterproof membrane 3 is a polyurea membrane, a polyurethane membrane, a modified silane membrane or an acrylic membrane, and may be prefabricated into a planar flexible waterproof membrane, which is bent into any U shape on site, or may be prefabricated into a U-shaped flexible waterproof membrane in advance, where the thickness of the prefabricated flexible waterproof membrane 3 is 1-10mm, preferably 2-5mm.
The top of the prefabricated flexible waterproof membrane 3 is fixedly connected with the light filling block 2 through the bonding material 8, the lower part of the side wall of the prefabricated flexible waterproof membrane 3 is fixedly combined with the inner wall of the bridge joint through a high-strength bonding agent or a liquid waterproof coating made of the same material as the prefabricated flexible waterproof membrane 3, and the tire base cloth 6 is fixedly connected with the inner wall of the bridge joint and the lower surfaces of the beam plates 9 on two sides of the bridge joint through the flexible waterproof coating. The adhesion between the lower part of the side wall of the prefabricated flexible waterproof membrane 3 and the inner wall of the bridge seam is particularly important, the high-strength adhesive used herein can form high-strength side wall adhesion, the high-strength adhesive can adopt primer or high-strength polyurethane flexible glue, and the liquid waterproof paint can be polyurethane waterproof paint, polyurea waterproof paint, acrylic waterproof paint, modified silane waterproof paint, various rubber waterproof paint and other waterproof paint with flexibility.
The light compressible filler 5 may be formed by spraying a polyurethane foaming agent, or may be a prefabricated polyurethane foam filler, polystyrene foam filler or polyethylene foam filler as the light compressible filler 5, and the light compressible filler 5 is fixed in the prefabricated flexible waterproof membrane 3 by the adhesive material 8. The light compressible filling body 5 has compressibility and filling property and also plays a supporting role on the inverted U-shaped prefabricated flexible waterproof membrane 3, and as the light compressible filling body 5 is made of light, soft, compressible and stretchable materials, the light compressible filling body and the prefabricated flexible waterproof membrane 3 form a flexible U-shaped waterproof structure together, particularly, the lower part of the side wall of the inverted U-shaped prefabricated flexible waterproof membrane 3 is firmly bonded, the bonding pull strength is greater than 0.6Mpa, the peeling bonding force is greater than 1.5N/mm, the upper part of the side wall of the inverted U-shaped prefabricated flexible waterproof membrane 3 is a non-bonding surface, the following property is provided for joint change, and therefore, the flexible U-shaped waterproof structure has following property in the actual deformation process of a deformation joint, namely horizontal expansion and vertical dislocation process, has the allowance of stretching and compression, can adapt to large displacement deformation of the bridge joint, meanwhile, is firmly bonded with the inner wall of the bridge joint, is not easy to be damaged under strong vibration, and the waterproof effect is greatly improved.
The rainwater at the upper part of the inverted U-shaped prefabricated flexible waterproof membrane 3 is drained to two sides of a bridge joint, and a soaking gradient is formed when the bridge joint is constructed, wherein the middle of the bridge is high, and the two sides of the bridge are low. Even if water gathers on the upper part of the inverted U-shaped prefabricated flexible waterproof membrane 3, the side wall of the lower part of the prefabricated flexible waterproof membrane 3 is firmly bonded, and the U-shaped cavity of the prefabricated flexible waterproof membrane 3 is filled with the light compressible filling body 5 with supporting function, the water with the depth of less than one meter cannot crush or deform the inverted U-shaped prefabricated flexible waterproof membrane 3, and therefore, even if water is accumulated in the bridge joint, the flexible U-shaped waterproof structure is not easily damaged, and the waterproof effect is further improved.
The light filling block 2 can be formed by spraying polyurethane foaming agent, and can also be used as the light filling block 2 by adopting a prefabricated polyurethane foam filling block, a polystyrene foam filling block or a polyethylene foam filling block, wherein the light filling block 2 is fixedly connected with the inner wall of a bridge joint through an adhesive material 8 or a screw.
The adhesive material 8 is self-adhesive tape, polyurethane adhesive, acrylic adhesive, neoprene adhesive, styrene-butadiene adhesive or butyl adhesive.
The body waterproof layer 4 may be formed by on-site coating of a flexible waterproof coating material, or a prefabricated self-adhesive waterproof film may be used as the body waterproof layer 4. The main body waterproof layer 4 can be flush with the lower surfaces of the beam plates 9 at two sides of the bridge joint to form an integral plane shape at the bridge joint, can be a curved surface which is concave inwards at the bridge joint, or can be a curved surface which is convex outwards at the bridge joint.
The construction method of the waterproof structure of the bridge joint comprises the following steps:
1) A water stop belt 1 is fixedly arranged in a bridge joint;
2) According to the size of the bridge joint, the light filling blocks 2 are filled below the water stop belt 1, specifically, the light filling blocks 2 are filled into the bridge joint by adopting the modes of extrusion fixing, mechanical screw fixing or fixing by adopting the adhesive material 8, or are directly foamed and fixed in a field foaming mode;
3) The prefabricated flexible waterproof membrane 3 is bent into a U shape on site, the opening of the prefabricated flexible waterproof membrane 3 is downward, the top of the prefabricated flexible waterproof membrane 3 is fixedly connected with the light filling block 2 through the bonding material 8, the lower part of the side wall of the prefabricated flexible waterproof membrane 3 is fixed on the inner wall of a bridge joint through a high-strength bonding agent, the light compressible filling body 5 is filled in the U-shaped cavity formed by bending the prefabricated flexible waterproof membrane 3, the light compressible filling body 5 is arranged to a proper shape, specifically, the light compressible filling body 5 can be formed by foaming on site, for example, polyurethane foaming agent spraying foaming filling is adopted, or the prefabricated polyurethane foaming body, polystyrene foaming filling body or polyethylene foaming filling body can be used as the light compressible filling body 5, and the light compressible filling body 5 is fixed in the prefabricated flexible waterproof membrane 3 through the bonding material 8; coating flexible waterproof paint on the lower surfaces of the beam plates 9 on two sides of the bridge joint to form a waterproof layer 7, fixing the tire base cloth 6 on two sides of the prefabricated flexible waterproof film 3, and coating the flexible waterproof paint on the tire base cloth 6, wherein the tire base cloth 6 extends until the lower surfaces of the beam plates 9 on two sides of the bridge joint overlap with the waterproof layer 7;
4) The lower surface of the light compressible filling body 5 and the lower surfaces of the beam plates 9 at two sides of the bridge joint are integrally covered by the main body waterproof layer 4 to form the integral bridge joint flexible cover plate waterproof layer.
Therefore, the waterproof structure and the construction method of the bridge joint adopt the light filling blocks 2 to be fixed below the water stop belt 1 to provide a supporting base layer capable of construction operation, the bonding material 8 at the top of the prefabricated flexible waterproof membrane 3 and high-strength bonding agents at the two sides ensure that the prefabricated flexible waterproof membrane 3 is firmly fixed in the bridge joint and does not fall off, the inverted U-shaped prefabricated flexible waterproof membrane 3 is filled with the light compressible filling bodies 5, the light compressible filling bodies 5 have supporting effect on the prefabricated flexible waterproof membrane 4 and are soft compressible materials, and therefore the flexible U-shaped waterproof structure is formed. The waterproof layer 4 of the main body is adopted to integrally cover the lower surface of the light compressible filling body 5 and the lower surface of the beam plates 9 on two sides of the bridge joint, and the waterproof effect is further improved by adding a layer of integral waterproof layer 4 of the main body. All parts in the bridge joint are made of light materials, so that the bonding load of the inner side surface of the bridge joint is greatly reduced. The waterproof structure of the bridge joint and the construction method of the embodiment are constructed on the back surface of the bridge joint, so that the train operation is not influenced, the construction can be performed in daytime, and meanwhile, the implementation of the waterproof structure of the bridge joint is not influenced by the high-speed running of the train.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (9)
1. The waterproof structure of the bridge joint is characterized by comprising a water stop belt, a light filling block, a prefabricated flexible waterproof film and a main waterproof layer, wherein the prefabricated flexible waterproof film is in an inverted U shape, the water stop belt, the light filling block and the prefabricated flexible waterproof film are sequentially fixed in the bridge joint from top to bottom, the top of the prefabricated flexible waterproof film is fixedly connected with the light filling block, the lower parts of the two sides of the prefabricated flexible waterproof film are fixedly connected with the inner wall of the bridge joint, the light compressible filling body is filled in the prefabricated flexible waterproof film, and the main waterproof layer covers the lower surface of the light compressible filling body and extends to the lower surfaces of beam plates on the two sides of the bridge joint; the waterproof layer is arranged on the lower surface of the beam plates at two sides of the bridge joint and between the lower surface of the beam plates at two sides of the bridge joint and the main waterproof layer, the two sides of the prefabricated flexible waterproof membrane are fixed with tire base cloth, the lower part of the side wall of the prefabricated flexible waterproof membrane and the tire base cloth are fixedly connected with the inner wall of the bridge joint, and the tire base cloth is used for extending to the lower surface of the beam plates at two sides of the bridge joint and overlapping with the waterproof layer.
2. The waterproof structure of the bridge joint according to claim 1, wherein the top of the prefabricated flexible waterproof membrane is fixedly connected with the light filling block through an adhesive material, the lower part of the side wall of the prefabricated flexible waterproof membrane is fixedly combined with the inner wall of the bridge joint through a high-strength adhesive or a liquid waterproof coating made of the same material as the prefabricated flexible waterproof membrane, and the tire base cloth is fixedly connected with the inner wall of the bridge joint and the lower surfaces of the beam plates at two sides of the bridge joint through a flexible waterproof coating.
3. The waterproof construction for bridge joints according to claim 1, wherein the lightweight compressible filler is formed by spray foaming with polyurethane foaming agent.
4. The waterproof structure of a bridge seam according to claim 1, wherein the lightweight compressible filler is a polyurethane foam filler, a polystyrene foam filler, or a polyethylene foam filler, the lightweight compressible filler being fixed within the prefabricated flexible waterproof film by an adhesive material.
5. The waterproof structure of the bridge joint according to claim 1, wherein the lightweight filler is formed by spraying and foaming a polyurethane foaming agent.
6. The waterproof structure of a bridge joint according to claim 1, wherein the lightweight filler is a polyurethane foam filler, a polystyrene foam filler or a polyethylene foam filler, and the lightweight filler is fixedly connected with the inner wall of the bridge joint by an adhesive material or a screw.
7. The waterproof construction for bridge seams of claim 1, wherein the main body waterproof layer is formed by in-situ coating of a flexible waterproof coating.
8. The waterproof construction of a bridge seam according to claim 1, wherein the main body waterproof layer is a prefabricated self-adhesive waterproof film.
9. A method of constructing a waterproof structure for a bridge joint according to any one of claims 1 to 8, comprising the steps of:
1) The water stop belt is fixedly arranged in the bridge joint;
2) Filling the light filling blocks below the water stop belt according to the size of the bridge joint;
3) Bending the prefabricated flexible waterproof membrane into a U shape on site, enabling an opening of the prefabricated flexible waterproof membrane to be downward, fixedly connecting the top of the prefabricated flexible waterproof membrane with the light filling blocks, fixing two sides of the prefabricated flexible waterproof membrane on the inner wall of the bridge joint, filling the light compressible filling bodies into a U-shaped cavity formed by bending the prefabricated flexible waterproof membrane, and finishing the hollow cavity into a proper shape;
4) And the lower surface of the light compressible filling body and the lower surfaces of the beam plates at two sides of the bridge joint are integrally covered by the main body waterproof layer to form the integral bridge joint flexible cover plate waterproof layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811048484.1A CN108867337B (en) | 2018-09-10 | 2018-09-10 | Waterproof structure of bridge joint and construction method |
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| CN201811048484.1A CN108867337B (en) | 2018-09-10 | 2018-09-10 | Waterproof structure of bridge joint and construction method |
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| CN108867337A CN108867337A (en) | 2018-11-23 |
| CN108867337B true CN108867337B (en) | 2024-01-12 |
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| CN110439235A (en) * | 2019-07-23 | 2019-11-12 | 深圳市惠深博越智慧建造科技有限公司 | The anti-hollowing construction technology of tapestry brick |
| CN110700080B (en) * | 2019-10-16 | 2021-10-15 | 中铁大桥局集团有限公司 | Anti-falling waterproof device for beam end of large-span bridge |
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| CN208748507U (en) * | 2018-09-10 | 2019-04-16 | 天津森聚柯密封涂层材料有限公司 | A kind of waterproof construction of joint of bridge |
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| CN107842043A (en) * | 2017-11-30 | 2018-03-27 | 天津森聚柯密封涂层材料有限公司 | The flexible water structure and manufacture method of a kind of movement joint |
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| CN108867337A (en) | 2018-11-23 |
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